body {
    font-family: sans-serif;
    margin: 0;
    background-color: #f0f2f5;
}

.container {
    width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 24px;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
}

.header-brand h1 {
    margin: 0;
    font-size: 2rem;
}

.tagline {
    margin: 6px 0 0;
    color: var(--muted);
    font-size: 0.95em;
}

.auth-links {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.auth-links .auth-link {
    text-decoration: none;
    color: var(--link);
    font-weight: 500;
}

.welcome {
    color: var(--muted);
    font-size: 0.9em;
}

.header-controls {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
}

.control-group input[type="text"],
.control-group select {
    padding: 8px 10px;
    border-radius: 6px;
    border: 1px solid var(--button-border);
    background: var(--card-bg);
    color: var(--text);
    min-width: 220px;
}

.filter-drawer {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 12px;
    background: var(--card-bg);
}

.filter-drawer summary {
    cursor: pointer;
    color: var(--link);
    font-weight: 500;
}

.filter-content {
    margin-top: 8px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.meta-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    color: var(--muted);
    font-size: 0.85em;
}

.admin-tools {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 12px;
}

.admin-actions {
    margin-top: 8px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.link-button {
    background: transparent;
    border: none;
    color: var(--link);
    cursor: pointer;
    padding: 0;
    font-size: 0.9em;
}

.link-button:hover {
    text-decoration: underline;
}

.refresh-button {
    margin-left: 10px;
    padding: 6px 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    background: #f7f7f7;
    cursor: pointer;
}

.load-more-button {
    display: block;
    width: 100%;
    margin: 16px 0;
    padding: 10px 12px;
    background: #fff;
    border: 1px solid #ccc;
    border-radius: 6px;
    cursor: pointer;
}
.list-controls { margin-top: 8px; }

.article-list {
    background-color: transparent;
    padding: 0;
}

.article h2 a {
    text-decoration: none;
    color: var(--text);
}
.article h2 a:hover, .article h2 a:focus {
    color: var(--link);
}

.badge-new {
    display: inline-block;
    margin-left: 8px;
    padding: 2px 6px;
    font-size: 0.75em;
    color: #155724;
    background: #d4edda;
    border: 1px solid #c3e6cb;
    border-radius: 10px;
    vertical-align: middle;
}

.toggle-summary-button {
    margin-left: 10px;
    padding: 4px 8px;
    font-size: 0.85em;
    border: 1px solid #ccc;
    border-radius: 4px;
    background: #f7f7f7;
    cursor: pointer;
}

.article .source {
    color: #666;
    font-size: 0.8em;
}

.feedback-buttons button {
    padding: 5px 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    cursor: pointer;
}

.like-button {
    background-color: #d4edda;
}

.dislike-button {
    background-color: #f8d7da;
}

.article-meta {
    margin-top: 8px;
    font-size: 0.85em;
    color: #666;
}
.meta-sep { margin: 0 6px; color: #aaa; }
.meta-item { white-space: nowrap; }

/* Accessibility helpers */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

/* Toast notifications */
#toast-container {
    position: fixed;
    bottom: 16px;
    right: 16px;
    z-index: 9999;
}
.toast {
    display: none;
    background: #333;
    color: #fff;
    padding: 10px 14px;
    margin-top: 8px;
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    font-size: 0.9em;
}
.toast-success { background: #28a745; }
.toast-error { background: #dc3545; }
.toast-info { background: #007bff; }
.theme-toggle { margin-left: 8px; padding: 6px 10px; border-radius: 4px; }
.tag-filter-select { min-width: 160px; max-width: 220px; }

/* Topic chips */
.topics-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.topic-chip { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--button-border); border-radius: 16px; padding: 6px 10px; background: var(--button-bg); color: var(--button-text); cursor: pointer; }
.topic-chip input { appearance: none; width: 14px; height: 14px; border: 1px solid var(--button-border); border-radius: 3px; display: inline-block; position: relative; }
.topic-chip input:checked { background: var(--link); border-color: var(--link); }
.topic-chip input:checked::after { content: '\2713'; position: absolute; top: -2px; left: 2px; color: #fff; font-size: 14px; }

/* Toasts */
#toast-container { position: fixed; bottom: 16px; right: 16px; z-index: 9999; display: flex; flex-direction: column; gap: 8px; }
.toast { display: none; background: var(--toast-bg); color: var(--toast-fg); padding: 10px 12px; border-radius: 4px; box-shadow: 0 2px 6px rgba(0,0,0,0.2); }
.toast-success { background: #2e7d32; color: #fff; }
.toast-error { background: #b00020; color: #fff; }
.toast-info { background: #2962ff; color: #fff; }

/* Inline why-chip */
.why-chip { display: inline-block; margin-left: 8px; padding: 2px 6px; font-size: 0.75em; border: 1px solid var(--button-border); border-radius: 10px; background: var(--button-bg); color: var(--muted); cursor: help; }
.why-chip:hover { color: var(--button-text); border-color: var(--tab-active-border); }

.why-tooltip { display: none; position: absolute; z-index: 1000; max-width: 340px; background: var(--card-bg); color: var(--text); border: 1px solid var(--border); border-radius: 6px; padding: 8px 10px; box-shadow: 0 2px 8px rgba(0,0,0,.15); font-size: 0.875em; }

/* Display tags under headlines */
.headline-tags { margin: 4px 0 6px; }
.tag-chip { display: inline-block; margin-right: 6px; margin-top: 2px; padding: 2px 6px; font-size: 0.75em; border: 1px solid var(--button-border); border-radius: 10px; background: var(--button-bg); color: var(--muted); }
.tag-chip { cursor: pointer; }
.tag-chip.active { color: var(--button-text); border-color: var(--tab-active-border); }

/* Personalized rail */
.for-you-section {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 24px;
    box-shadow: 0 6px 20px rgba(17, 17, 17, 0.05);
}

.for-you-section--logged-out {
    text-align: center;
}

.for-you-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
}

.for-you-header h2 {
    margin: 0;
}

.for-you-subtitle {
    margin-top: 4px;
    color: var(--muted);
    font-size: 0.9em;
}

.for-you-tools {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.rail-status {
    color: var(--muted);
    font-size: 0.85em;
}

.rail-empty {
    margin-top: 16px;
    color: var(--muted);
}

.for-you-rail {
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.for-you-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.for-you-card .feedback-buttons {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.for-you-card .read-more-button { padding: 6px 10px; }

.for-you-card .like-button { padding: 6px 10px; }

.for-you-snippet {
    margin: 8px 0;
    color: var(--muted);
    font-size: 0.92em;
    line-height: 1.45;
}

.because-chip {
    display: inline-block;
    margin-bottom: 8px;
    padding: 3px 8px;
    border-radius: 999px;
    border: 1px solid var(--button-border);
    background: var(--button-bg);
    color: var(--muted);
    font-size: 0.75em;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.cta-buttons {
    margin-top: 16px;
    display: flex;
    justify-content: center;
    gap: 12px;
}

/* Skeletons */
.skeleton { background: linear-gradient(90deg, rgba(255,255,255,0.10) 25%, rgba(255,255,255,0.18) 37%, rgba(255,255,255,0.10) 63%); background-size: 400% 100%; animation: shimmer 1.2s ease-in-out infinite; }
.skeleton-card { border: 1px solid #eee; border-radius: 6px; padding: 12px; margin-bottom: 12px; }
.skeleton-line { height: 12px; border-radius: 6px; margin: 8px 0; }
.skeleton-line.short { width: 40%; }
.skeleton-line.medium { width: 70%; }
/* Theme variables */
:root {
  --bg: #ffffff;
  --text: #111111;
  --muted: #666666;
  --card-bg: #ffffff;
  --border: #e5e5e5;
  --link: #174ea6;
  --button-bg: #f2f2f2;
  --button-text: #111111;
  --button-border: #dddddd;
  --tab-active-bg: #e8f0fe;
  --tab-active-border: #8ab4f8;
  --toast-bg: #333333;
  --toast-fg: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1116;
    --text: #e5e9f0;
    --muted: #aab2bf;
    --card-bg: #131a24;
    --border: #263042;
    --link: #84a9ff;
    --button-bg: #182233;
    --button-text: #e5e9f0;
    --button-border: #2a364b;
    --tab-active-bg: transparent;
    --tab-active-border: #4c7dff;
    --toast-bg: #1b2331;
    --toast-fg: #f1f5fb;
  }
}

[data-theme='dark'] {
  --bg: #0e1116;
  --text: #e5e9f0;
  --muted: #aab2bf;
  --card-bg: #131a24;
  --border: #263042;
  --link: #84a9ff;
  --button-bg: #182233;
  --button-text: #e5e9f0;
  --button-border: #2a364b;
  --tab-active-bg: transparent;
  --tab-active-border: #4c7dff;
  --toast-bg: #1b2331;
  --toast-fg: #f1f5fb;
}

body {
  background: var(--bg);
  color: var(--text);
}

.container { color: var(--text); }
a { color: var(--link); }

/* Cards and borders */
.article { background: var(--card-bg); border: 1px solid var(--border); border-radius: 8px; padding: 12px; margin-bottom: 16px; box-shadow: 0 1px 2px rgba(0,0,0,0.06); }
.article .source, .article .article-meta { color: var(--muted); }
.article .meta-sep { color: var(--muted); }

/* Buttons */
button { background: var(--button-bg); color: var(--button-text); border: 1px solid var(--button-border); transition: background-color .15s ease, border-color .15s ease, filter .15s ease; }
.refresh-button, .load-more-button, .toggle-summary-button, .read-more-button, .like-button, .dislike-button, .not-interested-button, .theme-toggle { background: var(--button-bg); color: var(--button-text); border: 1px solid var(--button-border); }
button:hover { filter: brightness(1.06); }
button:focus { outline: 2px solid var(--tab-active-border); outline-offset: 1px; }
button:disabled { opacity: .65; cursor: not-allowed; }
.refresh-button, .load-more-button, .toggle-summary-button, .read-more-button, .like-button, .dislike-button, .not-interested-button, .theme-toggle { background: var(--button-bg); color: var(--button-text); border: 1px solid var(--button-border); }

.skeleton-line.long { width: 90%; }
@keyframes shimmer { 0% { background-position: 100% 0; } 100% { background-position: -100% 0; } }